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JPS55105678A - Production of halogenated thioxanthenone - Google Patents

Production of halogenated thioxanthenone

Info

Publication number
JPS55105678A
JPS55105678A JP1337679A JP1337679A JPS55105678A JP S55105678 A JPS55105678 A JP S55105678A JP 1337679 A JP1337679 A JP 1337679A JP 1337679 A JP1337679 A JP 1337679A JP S55105678 A JPS55105678 A JP S55105678A
Authority
JP
Japan
Prior art keywords
formula
thioxanthenone
compound
sulfuric acid
bromination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1337679A
Other languages
Japanese (ja)
Inventor
Tsutomu Shirosaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Kayaku Co Ltd
Original Assignee
Nippon Kayaku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kayaku Co Ltd filed Critical Nippon Kayaku Co Ltd
Priority to JP1337679A priority Critical patent/JPS55105678A/en
Publication of JPS55105678A publication Critical patent/JPS55105678A/en
Pending legal-status Critical Current

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  • Polymerisation Methods In General (AREA)

Abstract

PURPOSE: The chlorination or bromination of thioxanthenone is conducted in an inorganic or organic solvent to give title compound useful as a photopolymerization initiator for photosensitive resin compositions in high yield.
CONSTITUTION: The chlorination or bromination of a compound of formula I (X, Y1 and Y2 are H, Cl, Br, lower alkyl, lower alkoxy; where Y1 and Y2 are not Cl or Br simultaneously), e.g., thioxanthenone, is conducted in an inorganic solvent, e.g., 40W100% sulfuric acid, or organic solvent, e.g., dichloroethane, to form a compound of formula II (Z is Cl or Br directly bonding to the thioxanthene nucleus ring; n is 1W3). The temperature of halogenation is 0W120°C. The compound of formula I, the starting material, is obtained by condensational ring closure reaction between compounds of formula III and IV in sulfuric acid or fuming sulfuric acid preferably at 10W100°C. The mixture of them is superior in the rate of curing by ultraviolet rays to each component.
COPYRIGHT: (C)1980,JPO&Japio
JP1337679A 1979-02-09 1979-02-09 Production of halogenated thioxanthenone Pending JPS55105678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1337679A JPS55105678A (en) 1979-02-09 1979-02-09 Production of halogenated thioxanthenone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1337679A JPS55105678A (en) 1979-02-09 1979-02-09 Production of halogenated thioxanthenone

Publications (1)

Publication Number Publication Date
JPS55105678A true JPS55105678A (en) 1980-08-13

Family

ID=11831372

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1337679A Pending JPS55105678A (en) 1979-02-09 1979-02-09 Production of halogenated thioxanthenone

Country Status (1)

Country Link
JP (1) JPS55105678A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209706A1 (en) * 1981-03-16 1982-10-07 Nippon Kayaku K.K., Tokyo DIALKYL THIOXANTHON COMPOUNDS, METHOD FOR THEIR PRODUCTION AND THEIR USE
US5414092A (en) * 1991-06-24 1995-05-09 International Bio-Synthetics Limited Thioxanthone derivatives

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209706A1 (en) * 1981-03-16 1982-10-07 Nippon Kayaku K.K., Tokyo DIALKYL THIOXANTHON COMPOUNDS, METHOD FOR THEIR PRODUCTION AND THEIR USE
US4450279A (en) * 1981-03-16 1984-05-22 Nippon, Kayaku, Kabushiki, Kaisha Dialkylthioxanthones
US5414092A (en) * 1991-06-24 1995-05-09 International Bio-Synthetics Limited Thioxanthone derivatives

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